<html>
  <body>
    <input id="x" type="text"/>
    <p>Content for on screen keyboard testing.</p>
  </body>
  <script>
    var actionCount = 0;
    function doAction() {
      if (actionCount++ == 1) {
        document.documentElement.requestFullscreen();
      } else {
        document.getElementById("x").focus();
      }
    }
    document.addEventListener('click', function(e) { doAction(); }, false);
  </script>
</html>
